ES2703909T3 - Apparatus to intelligently reduce certain absorption rates, protective cover and terminal equipment - Google Patents

Abstract

Apparatus for reducing a specific absorption rate, comprising: an antenna assembly (101, 301); a detection assembly (102) configured to detect an approach to or contact with the antenna assembly (101, 301) by a human body; wherein the sensing assembly (102) is also configured to control the antenna assembly (101, 301) to reduce input power when it detects an approach to or contact with the antenna assembly (101, 301) by a body human, characterized in that the antenna mount (101, 301) is provided on a first circuit board (303), while the detection mount (102) is applied to a second circuit board (304) and the mount is antenna electrically connected to the detection assembly; wherein the first circuit board (303) is superimposed on the second circuit board (304) and said first and second circuit boards (303, 304) being separated from each other by an electrically insulating base material (305) .

Description

DESCRIPTION

Apparatus to intelligently reduce certain absorption rates, protective cover and terminal equipment

AMBIT

[0001] The subject matter in question relates generally to the field of mobile communication, in particular to an apparatus for intelligently reducing a certain absorption rate, a protective cover and a terminal equipment.

BACKGROUND

[0002] SAR is the acronym of "Specific absorption rate" which refers to the absorption ratio or absorption rate of the electromagnetic wave. It is the absorption ratio of the electromagnetic wave energy emitted by cell phones or wireless devices. It is defined that the human body will generate an internal electromagnetic field induced in the function of an external electromagnetic field, so the international scientific community uses a "SAR" value to quantify and measure the radiation emitted from cell phones.

[0003] With the development of mobile communication, the portable mobile terminal approaches the life of the people. People are using mobile terminals, for example, cell phones or tablet computers more frequently and for longer periods.

[0004] Due to the increase of various mobile terminal equipment, an antenna assembly becomes an essential assembly for performing the exchange of data between a terminal equipment and other terminal equipment or a terminal equipment and a base station. A stay in the vicinity of mobile terminals at a close distance for long-term use is linked to the production of damage to the human body.

[0005] Document US 2013/0149957 A1 relates to mobile communication devices; and more particularly to an adaptive transceiver and an antenna system adapted to be coupled with a wireless communication device to improve the performance of the communication link. US 2014/0071022 A1 refers to a mobile terminal equipment, for example, a smart phone, which has its ground connection separated from a conductive unit and a capacitive coupling to the conductive unit, so that frequency resonance is generated added by the conductive unit near the center frequency of a frequency band. EP 2515602 A1 relates to the field of wireless radiation protection, in particular to a method, a control apparatus and a wireless terminal equipment for reducing radiation damage of a wireless terminal equipment. US 2012/0257657 A1, refers to the limitation of electromagnetic radiation emissions in wireless communication devices.

SUMMARY

[0006] The main technical problem that the present disclosure seeks to solve is to provide an apparatus for intelligently reducing a specific absorption rate, a protective sheath and a terminal equipment, to reduce the radiation of an antenna to a human body. Thus reducing damage to the human body by the antenna.

[0007] To solve the above technical problem, the present disclosure provides a technical solution: to provide an apparatus for intelligently reducing a specific absorption rate which comprises: an antenna assembly; a detection assembly configured to detect an approximation of or contact with a human body of the antenna assembly; wherein the detector assembly is also configured to control the antenna assembly in order to reduce the input power when it detects an approach to or contact with a human body of the antenna assembly.

[0008] To solve the above-mentioned technical problem, the present disclosure provides another technical solution: to provide a protective cover to intelligently reduce a specific absorption rate, which includes a protective cover and an apparatus housed in said protective cover, where Apparatus is the apparatus mentioned above to intelligently reduce a specific absorption rate.

[0009] To solve the above-mentioned technical problem, the present disclosure provides another technical solution: to provide a terminal equipment to intelligently reduce a specific absorption rate comprising a mobile terminal equipment and a protective cover to intelligently reduce a rate of specific absorption; the mobile terminal is placed in the protective case and is wired or wirelessly connected to the antenna assembly; where such a protective sheath is the protective sheath mentioned above to intelligently reduce a specific absorption rate.

[0010] The present disclosure provides an advantage: unlike the prior art, in the present disclosure, the detection assembly can detect the approach of or contact with the antenna assembly of the human body, and control the antenna assembly for decrease the input energy when the human body approaches or comes into contact with the antenna assembly. The detection assembly is able to control the input power of the antenna according to the distance between the human body and the antenna, which means that said detection assembly can maintain the original input power when the human body is not close or in contact with the antenna assembly, and decrease said input power when the human body is near or in contact with the antenna assembly. Compared with previous antennas that always maintain the same input power, the detector assembly of the present disclosure can reduce the input power when the human body is near or in contact with the antenna assembly, thus reducing the radiation to the human body and reducing damage to it.

BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Embodiments of the present technology will now be described, by way of example only, with reference to the appended figures, in which:

Figure 1 is a schematic diagram of an embodiment of an apparatus for intelligently reducing a specific absorption rate.

Figure 2 is a flow chart of an embodiment of the apparatus for intelligently reducing a specific absorption rate.

Figure 3 is a schematic diagram of an embodiment of an apparatus for intelligently reducing a specific absorption rate.

Figure 4 is a schematic diagram of an embodiment of an apparatus for intelligently reducing a specific absorption rate.

Figure 5 is a schematic diagram of an embodiment of a protective cover to intelligently reduce a specific absorption rate.

Figure 6 is a cross-sectional view of an embodiment of the protective cover to intelligently reduce a specific absorption rate.

FIGURE 7 is a schematic diagram of an embodiment of a terminal equipment to intelligently reduce a specific absorption rate.

DETAILED DESCRIPTION

[0012] It will be appreciated that for simplicity and clarity of illustration, when appropriate, reference numbers between the different figures are repeated to indicate corresponding or analogous elements. In addition, numerous specific details are set forth to provide a complete understanding of the embodiments described herein. However, those skilled in the art will understand that the embodiments described herein can be practiced without these specific details. In other cases, the methods, procedures and components have not been described in detail so as not to hide the related relevant characteristic that is described. In addition, the description should not be considered as limiting the scope of the embodiments described in this document. The drawings are not necessarily to scale and the proportions of certain parts have been exaggerated to better illustrate the details and characteristics of the present disclosure.

[0013] The disclosure is illustrated in the figures of the accompanying drawings by way of example and not in a limiting manner in which similar references indicate similar elements. It should be noted that references to "an" embodiment in this disclosure are not necessarily to the same embodiment, and such references mean at least one.

[0014] Now several definitions will be presented that apply throughout this disclosure.

[0015] The term "comprising", when used, means "including, but not necessarily limited to"; specifically indicates open inclusion or membership in the combination, group, series and the like described.

[0016] The present description is described in relation to an apparatus for intelligently reducing a specific absorption rate, a protective sheath and a terminal equipment.

[0017] Figure 1 illustrates a schematic diagram of an embodiment of an apparatus for intelligently reducing a specific absorption rate, the apparatus comprises an antenna assembly 101 and a detection assembly 102. The detection assembly 102 can be configured to detecting an approach of or contacting the antenna assembly 101 by a human body and controlling the detection assembly 101 to decrease the input power by detecting the approach of or contact with the detection assembly 101 by the human body.

[0018] The antenna assembly 101 may be an antenna incorporated in a mobile terminal equipment, for example, a radiofrequency transmitter apparatus of a cellular phone, and may also be an external antenna that receives and transmits signals, for example, a router or a network switch.

[0019] The detection assembly 102 is generally positioned near the antenna assembly 101, and is similar in size to the antenna assembly 101 or a device that integrates the antenna assembly 101, to facilitate detection of the approach to or contact with the antenna. the outside of the detector assembly by the human body.

[0020] For example, a cell phone, in most cases, emits the most intense radiation when people are talking on the phone, and their faces are close to the cell phone. Therefore, more than one detector or detection assembly can be provided by a similar area of the contact surface along the surface of the mobile telephone near the face, and the detection assembly will control the antenna incorporated in the mobile phone to decrease the input power when detecting the approach of or contact with the mobile by the face.

[0021] With reference to Figure 2, a flow diagram according to an embodiment of the apparatus is shown. The method is provided by way of example, since there are several ways of carrying out said method. The method described below can be carried out using the configurations illustrated in Figures 1 and 3 to 7, for example, and several elements of these figures are referred to to explain said method. Each block shown in Figure 2 represents one or more processes, methods or subroutines, performed in the method. The example method may begin in block 201.

[0022] Block 201: By means of the detection assembly it is determined whether the human body approaches or comes into contact with the antenna assembly; if it is affirmative, it goes to stage 202; if it is negative, continue with stage 201.

[0023] Block 202: By means of the detection assembly, the antenna assembly is controlled to decrease the input power.

[0024] Unlike the prior art, the detection assembly of an embodiment can detect the approach of or contact with the antenna assembly by the human body, and control said antenna assembly to decrease the input power when the body human is close to or makes contact with the antenna assembly. The detection assembly is able to control the input power of the antenna according to the distance between the human body and the antenna, which means that the detection assembly can maintain the original input power when the human body is not near or in Contact with the antenna assembly, and reduce the input power when the human body is near or in contact with the antenna assembly. Compared with the previous antennas that always maintain the same input power, the detection assembly of the present embodiment can decrease the input power when the human body is close to or in contact with the antenna assembly, thus reducing the radiation to the antenna. human body and thereby reducing the damage to it, while at the same time guaranteeing a stable signal.

[0025] Figure 3 illustrates a schematic diagram of an embodiment of an apparatus for intelligently reducing a specific absorption rate, wherein the apparatus comprises an antenna assembly 301, a detector 302 and a detection chip 306.

[0026] The antenna assembly 301 is provided on a first circuit board 303. The detector 302 and the detection chip 306 are applied on a second circuit board 304. The first circuit board 303 is superimposed on the second circuit board. circuit 304. These two circuit boards are separated by a base material 305.

[0027] The first circuit board 303 and the second circuit board 304 are generally printed circuit boards, or in particular circumstances they may be flexible printed circuit boards, for example, when the apparatus is placed in a comparatively soft protective cover. for a mobile terminal equipment, flexible printed circuit boards can be applied.

[0028] The base material 305 is provided between the first circuit board 303 and the second circuit board 304, mainly for electrical insulation and thermal dissipation, where the base material may be constituted of resin, rubber or silicone, for example, FR-4.

[0029] In one embodiment, a through hole 307 is defined in the corresponding position between the first circuit board 303, the second circuit board 304 and the base material 305. The through hole 307 traverses the two circuit boards and the base the material 305 to make an electrical connection between the antenna assembly 301 and the detection chip 306, where the detection chip 306 is electrically connected to the detector 302.

[0030] The detector 302 is generally a near-field detector that measures the distance between the human body and the terminal by infrared ray, and will experience a change in its capacitance when the human body approaches or comes into contact with it. The detection chip uses the capacity change to decide if the human body is close to or contacting the near field detector. The detection chip 306 can set a threshold value for the capacity change, and when a capacity change is detected beyond the threshold value, the detection chip 306, sends a control signal to control the antenna assembly 301 and to decrease the input power; In addition to being a near-field detector, the detector 302 can be any other detection or signal-receiving device that can detect the approach of or contact with the human body.

[0031] To further simplify the structure, only a near-field detector is placed in the vicinity of the place where the antenna transmits signals, so that no more detectors should be placed in a comparatively large area, which leads to a costs reduction.

[0032] Unlike the prior art, in one embodiment, the antenna assembly is applied to the first circuit board and the near field detector and the detection chip are placed on the second circuit board. The first circuit board and the second circuit board are separated by the base material, whereby the problem of poor thermal dissipation performance is avoided when the antenna assembly and the detector are integrated. Furthermore, as defined, the through-hole through the base material and the circuit boards ensures a good point-to-point connection between the antenna assembly and the detection chip. The near-field detector is used to detect the approach of or contact with the human body and the detection chip analyzes the result and controls the antenna assembly to decrease the input power when the human body approaches or is in contact with the antenna assembly, thus reducing the radiation of the antenna to the human body and reducing the damage to it.

[0033] Figure 4 illustrates a schematic diagram of an embodiment of an apparatus for intelligently reducing a specific absorption rate. The apparatus comprises a signal generating circuit 401, a power amplifier 402, an antenna 403, a detection chip 404 and a detector 405. The signal generating circuit 401, the power amplifier 402 and the antenna 403 are electrically connected in series on the first circuit board 406, while the detection chip 404 and the detector 405 are electrically connected on the second circuit board 407. The first circuit board 406 and the second circuit board 407 are separated by a material of base 408. The power amplifier 402 and the detection chip 404 are electrically connected through the through hole 307, defined in the first circuit board 406, the second circuit board 407 and the base material 408.

[0034] The signal generating circuit 401 is generally a modulating oscillating circuit for generating radio frequency output signals.

[0035] The power amplifier 402 is generally referred to as an RF power amplifier (RFPA), which is an integral part of the general wireless transmitters. In the previous stage circuit of the transmitter, the radiofrequency signal generated by the modulation oscillating circuit has a rather low power, so it needs a set with a first buffer stage, an intermediate amplification stage and an amplification stage of the amplifier. Final power to obtain a sufficient radio frequency power gain, only after that, the radio frequency signal can be supplied to the antenna for transmission.

[0036] More specifically, power amplifier 402 is configured to transmit a first power signal upon receiving an incoming sensing signal and transmitting a second power signal when it is not received, where the first power signal is less than the second power signal; then, the power amplifier 402 supplies the antenna 403 with the first power signal or the second power signal, and the antenna 403 transmits the first power signal and the second power signal.

[0037] As the radiofrequency power amplifier is based on the principle of multi-level amplification and the first power signal is lower than the second power signal, the first power signal is achieved as a result of the radio frequency signal generated by the oscillating modulation circuit through relatively fewer amplification stages, and the second power signal is achieved as a result of that through relatively more amplification steps; of course, an additional signal amplifier can be provided after the radio frequency power amplifier to modulate the input signals.

[0038] Unlike the prior art, the power amplifier of one embodiment, amplifies the incoming radio frequency signal generated by the signal generating circuit based on the principle of multiple level amplification with different levels, resulting in output signals with different powers after the radio frequency signal passes to the power amplifier, so that said power amplifier is able to amplify the radio frequency signal with different levels by receiving variable control commands from the detection chip and transmit accordingly Radio frequency signals with different power. When the detector detects that the human body is close to or contacting the antenna, the detection chip controls the power amplifier to decrease the power of the radiofrequency signal, thus reducing the radiation of the antenna to the human body and reducing the damage the same. .

[0039] Figure 5 illustrates a schematic diagram of an embodiment of a protective cover to intelligently reduce a specific absorption rate. The protective cover comprises a protective cover 501 and an apparatus 502 placed therein to intelligently reduce a specific absorption rate.

[0040] The apparatus 502 is the apparatus for intelligently reducing a specific absorption rate such as any prior device that intelligently reduces a specific absorption rate.

[0041] Figure 6 illustrates a cross-sectional view of the protective cover to intelligently reduce a specific absorption rate. The apparatus 502 is placed in the lower part of the inner space of the protective case 501. The upper part of the inner space of the protective case 501 is reserved for placing a mobile device. The apparatus 502 and the mobile device can be separated by a material, such as cloth, plastic or rubber with the same texture as the protective sheath 501, a through hole being defined in said material to facilitate the electrical connection between the terminal equipment and the apparatus. 502

[0042] Further, if the antenna mount of the apparatus 502 is an external antenna, a through hole can also be defined in the corresponding position in the protective sheath 501, so that the external antenna can be extended to transmit or receive signals.

[0043] Unlike the prior art, the apparatus of one embodiment for intelligently reducing a specific absorption rate, is placed in the protective cover of the mobile terminal equipment, and detects whether the human body is close to or contacting the antenna, while the mobile terminal equipment spontaneously establishes the mobile communication network, wherein the device reduces the output power of the antenna when the human body is close to or is brought into contact with it, where the apparatus is placed in the protective sheath of the mobile terminal equipment, therefore high cost operations for the user of the mobile terminal equipment can be prevented and at the same time the radiation of the antenna to the user and the damage thereof reduced.

[0044] Figure 7 illustrates a schematic diagram of an embodiment of a terminal equipment to intelligently reduce a specific absorption rate. The terminal comprises a mobile terminal equipment 701 and a protective sheath to intelligently reduce a specific absorption rate.

[0045] The protective cover comprises a protective cover 702 and an apparatus 703 for intelligently reducing a specific absorption rate placed in the protective cover 702.

[0046] The mobile terminal equipment 701 may be generally a tablet, a cellular phone or such a device, which is in wired or wireless connection with the apparatus 703 of the protective case 702. More specifically, the mobile terminal equipment 701, it is connected to the antenna assembly in the apparatus 703 to connect to a mobile network, thus enabling antenna assembly with mobile router functionality.

[0047] Unlike the prior art, the apparatus of one embodiment for intelligently reducing a specific absorption rate is found in the protective cover of the mobile terminal, and can detect if a human body is close to or contacting the antenna while the communication network is spontaneously executed by the mobile terminal, where the apparatus can decrease the output power of the antenna when the human body is close to or is put in contact with it, where the apparatus is placed in the protective cover of the mobile terminal equipment, thus being able to avoid high cost operations for the user of the mobile terminal equipment and at the same time reduce the radiation of the antenna to the user and the damage thereto.

[0048] It should be noted that the above embodiments are merely examples of the present invention which are defined in the appended claims.

Claims (13)

Apparatus for reducing a specific absorption rate, comprising: an antenna assembly (101, 301); a sensing assembly (102) configured to detect an approach to or contact with the antenna assembly (101, 301) by a human body; wherein the sensing assembly (102) is also configured to control the antenna assembly (101, 301) to reduce the input power when it detects an approach to or contact with the antenna assembly (101, 301) by a body human, characterized in that the antenna assembly (101, 301) is provided on a first circuit board (303), while the detection assembly (102) is applied on a second circuit board (304) and the assembly is of antenna electrically connected to the detection assembly; wherein the first circuit board (303) is superimposed on the second circuit board (304) and said first and second circuit boards (303, 304) being separated from each other by an electrically insulating base material (305) . Apparatus according to claim 1, characterized in that the detection assembly (102) comprises: a detector (302), which is configured to detect the approach to or contact with the antenna assembly (101, 301) by the human body; a detection chip (306) configured to determine whether the detector (302) detects the approach of or contact with the antenna assembly (101, 301) by the human body, and to control the antenna assembly (101, 301) to lower the input power when the detector (302) detects the approach to or contact with the antenna assembly (101, 301) by the human body. Apparatus according to claim 2, characterized in that a through hole (307) is defined in the relevant position between the first circuit board (303), the second circuit board (304) and the base material (305). to establish an electrical connection between the antenna assembly (101, 301) and a detection chip (306), wherein the detection chip (306) is electrically connected to the detector (302). Apparatus according to claim 2, characterized in that the detection chip (306) uses a detection of a capacitive change of the detector (302) to determine whether the detector (302) detects the approach to or contact with the antenna assembly (101, 301) by the human body. Apparatus according to claim 2 or 4, characterized in that the detector (302) is a near-field detector for detecting the approach to or contact with the antenna by the human body. Apparatus according to claim 1, characterized in that the antenna assembly (101, 301) comprises: a signal generator circuit (401) configured to generate output signals; a power amplifier (402) configured to transmit output signals with different power according to the control of the detection assembly; an antenna (403) configured to transmit the output signals from the power amplifier (402). Apparatus according to claim 6, characterized in that the power amplifier (402) is configured to transmit a first power signal when the human body approaches or comes into contact with the antenna assembly (101, 301) and when it is not detected to transmit a second power signal, wherein the first power signal is smaller in magnitude than the second power signal. Apparatus according to any of the preceding claims, characterized in that the antenna assembly (101, 301) is an antenna incorporated in a mobile terminal equipment. Apparatus according to any one of the preceding claims, characterized in that the antenna assembly (101, 301) is a radio frequency transmitting device of the mobile terminal equipment Apparatus according to any of the preceding claims, characterized in that the antenna assembly (101, 301) is a wireless mobile router. 11. Protective cover to reduce a specific absorption rate, characterized in that it comprises: a protective cover (501); Y an apparatus (502, 703) which is the apparatus claimed in any of the preceding claims, the apparatus (502) being received in said protective sheath. Protective case according to claim 11, characterized in that the apparatus is configured to be connected to an external mobile terminal equipment. 13. Terminal equipment to reduce a specific absorption rate, characterized in that it comprises: a mobile terminal equipment (701); Y a protective cover (702) which is the protective cover according to claim 11 or claim 12; wherein the mobile terminal equipment (701) is in wired or wireless connection with the antenna assembly (101, 301) of the apparatus (502, 703).